@franco so I found this.
The thing is firebase injects the required component into the app object based on what you’ve required.
Say if you require - const messaging = require('firebase/messaging/'), the messaging() function will be available in the firebaseApp object.
So require whatever component you need before accessing.
val firebaseApp = firebase.initializeApp(...)
kotlinext.js.require("firebase/messaging") // Required to force firebase to load analytics module
firebaseApp.analytics().logEvent("test")
Sadly you’ll have to do that wherever you need analytics or you could initialize it in a singleton on startup.